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A047678 as a simple table

na(n)
13
224
32304
415925248
526418075402240
626294650153960734720000
732976469951036202010909081600000000
897269850356607540052618180220048900096000000000000
91156838823908660229380221584221016428369393918222008320000000000000000

[3,24,2304,15925248,26418075402240,
 26294650153960734720000,
 32976469951036202010909081600000000,
 97269850356607540052618180220048900096000000000000\
 ,
 11568388239086602293802215842210164283693939182220\
 08320000000000000000]